CN209212430U - Inlet manifold and engine - Google Patents
Inlet manifold and engine Download PDFInfo
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- CN209212430U CN209212430U CN201822244665.3U CN201822244665U CN209212430U CN 209212430 U CN209212430 U CN 209212430U CN 201822244665 U CN201822244665 U CN 201822244665U CN 209212430 U CN209212430 U CN 209212430U
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- pressure stabilizing
- stabilizing cavity
- branch pipe
- exhaust gas
- inlet manifold
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Abstract
The utility model discloses a kind of inlet manifold and engine, inlet manifold includes: gas recirculation inlet, the exhaust gas pressure stabilizing cavity being connected to gas recirculation inlet；Wherein, exhaust gas pressure stabilizing cavity has the exhaust gas assignment channel for corresponding and being connected to the branch pipe of inlet manifold.Inlet manifold disclosed by the utility model, by the way that the exhaust gas pressure stabilizing cavity being connected to gas recirculation inlet is arranged, the exhaust gas pressure stabilizing cavity is provided with exhaust gas assignment channel, and the branch pipe of inlet manifold is corresponded and is connected to exhaust gas assignment channel, so that the exhaust gas of gas recirculation system is introduced into exhaust gas pressure stabilizing cavity, it is set in each branch pipe through the distribution of exhaust gas assignment channel, is directly entered each branch pipe through general pipeline compared with the prior art and compares, effectively increase the uniformity of exhaust gas distribution.
Description
Technical field
The utility model relates to engine design fields, more specifically to a kind of inlet manifold and engine.
Background technique
Under the national emission regulation specification being increasingly stringenter, gas recirculation system is widely used in gasoline engine.
Exhaust gas is directed directly on the general pipeline 02 of inlet manifold, is recycled into as shown in Figure 1, being provided with exhaust gas on the general pipeline 02 of inlet manifold
Mouth 01, exhaust gas is assigned in each branch pipe through general pipeline 02.Above-mentioned inlet manifold by four mouldings through vibration friction welding (FW) welding and
At as shown in Fig. 2, the inlet manifold has the first welding surface 03, the second welding surface 04 and third welding surface 05.Structure letter
Single, still, there are exhaust gas to distribute non-uniform problem.
In addition, naturally aspirated engine compares turbocharged engine, generally have in middle and slow speed of revolution volumetric efficiency it is low,
The poor characteristic of power performance and the economy performance, the power torque characteristics of naturally aspirated engine when to improve middle and slow speed of revolution, into
The branch pipe Design of length Cheng Zhongchang of gas manifold, specifically, branch length of tube are less than 400mm.
It is current those skilled in the art to improve the uniformity of exhaust gas distribution in conclusion how to design inlet manifold
Urgent problem to be solved.
Utility model content
In view of this, the purpose of the utility model is to provide a kind of inlet manifold, to improve the uniformity of exhaust gas distribution.This
The another object of utility model is to provide a kind of engine with above-mentioned inlet manifold.
In order to achieve the above object, the utility model provides the following technical solutions:
A kind of inlet manifold, comprising: gas recirculation inlet, the exhaust gas pressure stabilizing being connected to the gas recirculation inlet
Chamber；Wherein, the exhaust gas pressure stabilizing cavity has the exhaust gas assignment channel for corresponding and being connected to the branch pipe of the inlet manifold.
Preferably, the branch pipe is multiple, and is sequentially distributed along the length direction of the exhaust gas pressure stabilizing cavity；
The exhaust gas assignment channel is sequentially distributed along the length direction of the exhaust gas pressure stabilizing cavity.
Preferably, the inlet manifold is formed by least five manifold assembling parts；Wherein, at least two manifold zero
Part assembles to form the exhaust gas pressure stabilizing cavity.
Preferably, the inlet manifold is formed by five manifold assembling parts, and five manifold parts are respectively
First pipe fitting, second pipe fitting, third branch pipe fitting, the first pressure stabilizing cavity part and the second pressure stabilizing cavity part；
Wherein, the first pressure stabilizing cavity part and the second pressure stabilizing cavity part assemble to form the exhaust gas pressure stabilizing cavity；
The first pressure stabilizing cavity part and/or the second pressure stabilizing cavity part and the third branch pipe fitting assemble to form the branch pipe
Branch pipe air inlet section；
First pipe fitting and second pipe fitting assemble the branch pipe air outlet section to form the branch pipe；
The first pressure stabilizing cavity part and/or the second pressure stabilizing cavity part are assembled with second pipe fitting to be connected to the branch
Pipe air inlet section and the branch pipe air outlet section.
Preferably, the first pressure stabilizing cavity part is pressure stabilizing cavity main component, and the second pressure stabilizing cavity part is cover board；
Wherein, the gas recirculation inlet and the exhaust gas assignment channel are all set in the first pressure stabilizing cavity part；
The first pressure stabilizing cavity part and the third branch pipe fitting assemble to form the branch pipe air inlet section, first pressure stabilizing cavity
Part is assembled with second pipe fitting to be connected to the branch pipe air inlet section and the branch pipe air outlet section.
Preferably, the first pressure stabilizing cavity part is provided with the air inlet section outlet of the branch pipe air inlet section, and the air inlet section
Outlet and the exhaust gas pressure stabilizing cavity are located at the both ends of the length direction of the first pressure stabilizing cavity part；The exhaust gas is recycled into
Mouth is located between air inlet section outlet and the exhaust gas pressure stabilizing cavity.
Preferably, the manifold part is moulding, and the manifold part of connected two passes through vibration friction welding (FW) welding
It is connected.
Preferably, the branch pipe and the exhaust gas assignment channel are four.
Preferably, the length of the branch pipe is greater than or equal to 400mm.
Based on the inlet manifold of above-mentioned offer, the utility model additionally provides a kind of engine, which includes air inlet
Manifold, the inlet manifold are inlet manifold described in any of the above embodiments.
Inlet manifold provided by the utility model should by the way that the exhaust gas pressure stabilizing cavity being connected to gas recirculation inlet is arranged
Exhaust gas pressure stabilizing cavity is provided with exhaust gas assignment channel, and the branch pipe of inlet manifold is corresponded and is connected to exhaust gas assignment channel, is made
The exhaust gas for obtaining gas recirculation system is introduced into exhaust gas pressure stabilizing cavity, sets in each branch pipe through the distribution of exhaust gas assignment channel, more existing
Technology is directly entered each branch pipe through general pipeline and compares, and effectively increases the uniformity of exhaust gas distribution.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the structural schematic diagram for the inlet manifold that the prior art provides；
Fig. 2 is the structural schematic diagram of the other direction for the inlet manifold that the prior art provides；
Fig. 3 is the explosive view of inlet manifold provided by the embodiment of the utility model；
Fig. 4 is the structural schematic diagram of the first pressure stabilizing cavity part in Fig. 3；
Fig. 5 is the structural schematic diagram of inlet manifold provided by the embodiment of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As in Figure 3-5, inlet manifold provided by the embodiment of the utility model includes: gas recirculation inlet 16, and useless
Gas recycles the exhaust gas pressure stabilizing cavity 17 that import 16 is connected to；Wherein, exhaust gas pressure stabilizing cavity 17 has a pair of with the branch pipe one of inlet manifold
The exhaust gas assignment channel 18 answered and be connected to.
Inlet manifold provided by the embodiment of the utility model, it is steady by the way that the exhaust gas being connected to gas recirculation inlet 16 is arranged
Chamber 17 is pressed, which is provided with exhaust gas assignment channel 18, and the branch pipe of inlet manifold and exhaust gas assignment channel 18 1
One corresponding and connection distributes so that the exhaust gas of gas recirculation system is introduced into exhaust gas pressure stabilizing cavity 17 through exhaust gas assignment channel 18
It sets in each branch pipe, is directly entered each branch pipe through general pipeline compared with the prior art and compares, effectively increase the uniformity of exhaust gas distribution.
In above-mentioned inlet manifold, branch pipe is multiple, i.e. branch pipe at least two.For the ease of manufacture, above-mentioned branch pipe is along useless
The length direction of gas pressure stabilizing cavity 17 is sequentially distributed.In order to further increase the uniformity of exhaust gas distribution, above-mentioned exhaust gas assignment channel
18 are sequentially distributed along the length direction of exhaust gas pressure stabilizing cavity 17.It is understood that distribution and the branch pipe of exhaust gas assignment channel 18
Distribution is consistent.
Certainly, exhaust gas pressure stabilizing cavity 17 also may be selected is other shapes, and branch pipe is distributed using other modes, is not limited to
In this.
For the ease of manufacture, above-mentioned inlet manifold is formed by least five manifold assembling parts；Wherein, at least two manifold
Assembling parts form exhaust gas pressure stabilizing cavity 17.Moreover, the structure of each manifold part is simpler, manufacturing process is simpler.
In order to reduce components, while guaranteeing to facilitate manufacture, preferentially selects above-mentioned inlet manifold by five manifold part groups
It fills, five manifold parts are respectively first pipe fitting, 11, second pipe fittings 12, third branch pipe fitting 15, the first pressure stabilizing cavity part
13 and the second pressure stabilizing cavity part 14.
Wherein, the first pressure stabilizing cavity part 13 and the assembling of the second pressure stabilizing cavity part 14 form exhaust gas pressure stabilizing cavity 17；First pressure stabilizing cavity part
13 and/or second pressure stabilizing cavity part 14 the branch pipe air inlet section for forming branch pipe is assembled with third branch pipe fitting 15；First pipe fitting 11 and
Two pipe fittings 12 assemble the branch pipe air outlet section for forming branch pipe；First pressure stabilizing cavity part 13 and/or the second pressure stabilizing cavity part 14 and second
12 groups of pipe fitting are filled with connected component pipe air inlet section and branch pipe air outlet section.
It should be noted that first pipe fitting 11 and second pipe fitting 12 assemble the branch pipe air outlet section for forming branch pipe, refer to
Form the branch pipe air outlet section of all branch pipes；First pressure stabilizing cavity part 13 and/or the second pressure stabilizing cavity part 14 are assembled with third branch pipe fitting 15
The branch pipe air inlet section for forming branch pipe, refers to form the branch pipe air inlet section of all branch pipes；First pressure stabilizing cavity part 13 and/or the second pressure stabilizing
Chamber part 14 and second 12 groups of pipe fitting are filled with connected component pipe air inlet section and branch pipe air outlet section, refer to connection branch pipe air inlet section and and its
Corresponding branch pipe air outlet section, finally realizes the branch pipe air inlet section of all branch pipes and being connected to for branch pipe air outlet section.
Certainly, inlet manifold also may be selected to form by other manifold assembling parts, it is not limited to above-described embodiment.
Further, above-mentioned first pressure stabilizing cavity part 13 is pressure stabilizing cavity main component, and the second pressure stabilizing cavity part 14 is cover board.It can manage
Solution, pressure stabilizing cavity main component are equipped with the exhaust gas pressure stabilizing cavity 17 with opening, and cover board is by the closure of openings, to form above-mentioned envelope
The exhaust gas pressure stabilizing cavity 17 closed.
In above structure, gas recirculation inlet 16 and exhaust gas assignment channel 18 are all set in the first pressure stabilizing cavity part 13；The
One pressure stabilizing cavity part 13 forms branch pipe air inlet section with the assembling of third branch pipe fitting 15, and the first pressure stabilizing cavity part 13 and second pipe fitting 12 assemble
To be connected to branch pipe air inlet section and branch pipe air outlet section.
Specifically, the first pressure stabilizing cavity part 13 docked with third branch pipe fitting 15 to be formed branch pipe air inlet section, interface and branch pipe into
The center line of gas section is substantially parallel or parallel；First pipe fitting 11 and second docking of pipe fitting 12 form branch pipe air outlet section, dock
Face is substantially parallel or parallel with the center line of branch pipe air outlet section.
In above-mentioned inlet manifold, the first pressure stabilizing cavity part 13 and second 12 groups of pipe fitting are filled with connected component pipe air inlet section and branch pipe
Air outlet section, then above-mentioned first pressure stabilizing cavity part 13 is provided with the air inlet section outlet 19 of branch pipe air inlet section, and second 12 branch pipe of pipe fitting goes out
The air outlet section import of gas section, the air outlet section import are connected to air inlet section outlet 19.
In order to reduce occupied space, above-mentioned air inlet section outlet 19 and exhaust gas pressure stabilizing cavity 17 are located at the first pressure stabilizing cavity part 13
Length direction both ends；Gas recirculation inlet 16 is located between air inlet section outlet 19 and exhaust gas pressure stabilizing cavity 17.
Certainly, air inlet section outlet 19 also may be selected and exhaust gas pressure stabilizing cavity 17 is located at the ipsilateral of gas recirculation inlet 16, and
It is not limited to the above embodiment.
In above-mentioned inlet manifold, the first pressure stabilizing cavity part 13 also may be selected and the second pressure stabilizing cavity part 14 is other structures, for example,
First pressure stabilizing cavity part 13 has first point of chamber, and the second pressure stabilizing cavity part 14 has second point of chamber, first point of chamber and second point of chamber docking
Form exhaust gas pressure stabilizing cavity 17, it is not limited to above-described embodiment.
In order to simplify production, above-mentioned manifold part is moulding, and two connected manifold parts pass through vibration friction welding (FW) weldering
It connects connected.At this point, above-mentioned inlet manifold is preferentially selected to be formed by least five manifold assembling parts；Wherein, at least two manifold
Assembling parts form exhaust gas pressure stabilizing cavity 17.In this way, convenient for reaching the requirement of injection molding welding procedure.
It should be noted that each manifold part is welded again after being individually molded when manifold part is moulding
It connects.
Certainly, it is other materials that above-mentioned manifold part, which also may be selected, is fixedly linked by other means, it is not limited on
State embodiment.
The branch pipe of above-mentioned inlet manifold is determined according to the number of cylinder body.Usual cylinder body is four or six.Accordingly
Ground, branch pipe are four or six.For the ease of application, above-mentioned branch pipe and exhaust gas assignment channel 18 are four.
By emulating and testing, there is data to suggest that: increase branch length of tube, slow-speed of revolution torque has promotion, and performance boost
Obviously；But too long inlet manifold intake resistance is larger, and charge flow rate, volumetric efficiency are lower, causes high speed performance poor.Full
Under the premise of foot arrangement, by relevant simulation analysis in raising low-speed performance and sacrificing obtained in high rate performance one compared with
Suitable balance, specifically, the length of above-mentioned branch pipe are greater than or equal to 400mm.
It is understood that the length of branch pipe is the length of the axis of branch pipe, as shown in figure 5, position P is branch pipe
Axial location.The equal length of any two branch pipe.
Above-mentioned inlet manifold, the length by setting branch pipe are greater than or equal to 400mm, effectively improve natural aspiration and start
The middle and slow speed of revolution power torque of machine.
Inlet manifold provided by the embodiment of the utility model, the promotion for meeting middle and slow speed of revolution engine torque power are wanted
It asks, realizes integrated distribution exhaust gas, not only meet compact arrangement boundary and meet CFD (Computational Fluid
Dynamics) flow resistance, complete machine oscillation response require, while having good injection molding welding usability.
The inlet manifold provided based on the above embodiment, the utility model embodiment additionally provide a kind of engine, the hair
Motivation includes inlet manifold, which is inlet manifold described in above-described embodiment.
Since inlet manifold provided by the above embodiment has above-mentioned technique effect, above-mentioned engine has above-mentioned air inlet discrimination
Pipe, then above-mentioned engine also has corresponding technical effect, and repeats no more herein.
The foregoing description of the disclosed embodiments makes those skilled in the art can be realized or use the utility model.
Various modifications to these embodiments will be apparent for a person skilled in the art, general original as defined herein
Reason can be realized in other embodiments without departing from the spirit or scope of the present utility model.Therefore, this is practical new
Type is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase
Consistent widest scope.
Claims (10)
1. a kind of inlet manifold characterized by comprising gas recirculation inlet (16), with the gas recirculation inlet
(16) the exhaust gas pressure stabilizing cavity (17) being connected to；Wherein, the exhaust gas pressure stabilizing cavity (17) has with the branch pipe of the inlet manifold one by one
Corresponding and connection exhaust gas assignment channel (18).
2. inlet manifold according to claim 1, which is characterized in that
The branch pipe is multiple, and is sequentially distributed along the length direction of the exhaust gas pressure stabilizing cavity (17)；
The exhaust gas assignment channel (18) is sequentially distributed along the length direction of the exhaust gas pressure stabilizing cavity (17).
3. inlet manifold according to claim 1, which is characterized in that the inlet manifold is by least five manifold part groups
It fills；Wherein, at least two manifold assembling parts form the exhaust gas pressure stabilizing cavity (17).
4. inlet manifold according to claim 3, which is characterized in that the inlet manifold is by five manifold part groups
It fills, five manifold parts are respectively first pipe fitting (11), second pipe fitting (12), third branch pipe fitting (15),
One pressure stabilizing cavity part (13) and the second pressure stabilizing cavity part (14)；
Wherein, the first pressure stabilizing cavity part (13) and the second pressure stabilizing cavity part (14) assembling form the exhaust gas pressure stabilizing cavity
(17)；
The first pressure stabilizing cavity part (13) and/or the assembling of the second pressure stabilizing cavity part (14) and the third branch pipe fitting (15) are formed
The branch pipe air inlet section of the branch pipe；
First pipe fitting (11) and second pipe fitting (12) assembling form the branch pipe air outlet section of the branch pipe；
The first pressure stabilizing cavity part (13) and/or the second pressure stabilizing cavity part (14) and second pipe fitting (12) group are filled with company
Lead to the branch pipe air inlet section and the branch pipe air outlet section.
5. inlet manifold according to claim 4, which is characterized in that the first pressure stabilizing cavity part (13) is pressure stabilizing cavity main body
Part, the second pressure stabilizing cavity part (14) are cover board；
Wherein, the gas recirculation inlet (16) and the exhaust gas assignment channel (18) are all set in the first pressure stabilizing cavity part
(13)；
The first pressure stabilizing cavity part (13) and the third branch pipe fitting (15) assembling form the branch pipe air inlet section, and described first is steady
Pressure chamber part (13) is filled with second pipe fitting (12) group is connected to the branch pipe air inlet section and the branch pipe air outlet section.
6. inlet manifold according to claim 5, which is characterized in that the first pressure stabilizing cavity part (13) is provided with the branch
The air inlet section of pipe air inlet section exports (19), and described in air inlet section outlet (19) and the exhaust gas pressure stabilizing cavity (17) be located at
The both ends of the length direction of first pressure stabilizing cavity part (13)；The gas recirculation inlet (16) is located at air inlet section outlet (19)
Between the exhaust gas pressure stabilizing cavity (17).
7. inlet manifold according to claim 3, which is characterized in that the manifold part be moulding, connected two
The manifold part is weldingly connected by vibrating friction welding (FW).
8. inlet manifold according to claim 1, which is characterized in that the branch pipe and the exhaust gas assignment channel (18) are equal
It is four.
9. inlet manifold according to claim 1 to 8, which is characterized in that the length of the branch pipe is greater than or waits
In 400mm.
10. a kind of engine, including inlet manifold, which is characterized in that the inlet manifold is such as any one of claim 1-9
The inlet manifold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822244665.3U CN209212430U (en) | 2018-12-28 | 2018-12-28 | Inlet manifold and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822244665.3U CN209212430U (en) | 2018-12-28 | 2018-12-28 | Inlet manifold and engine |
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| Publication Number | Publication Date |
|---|---|
| CN209212430U true CN209212430U (en) | 2019-08-06 |
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ID=67466791
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| CN201822244665.3U Active CN209212430U (en) | 2018-12-28 | 2018-12-28 | Inlet manifold and engine |
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|---|---|
| CN (1) | CN209212430U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111749821A (en) * | 2020-06-29 | 2020-10-09 | 奇瑞汽车股份有限公司 | Air intake manifold |
-
2018
- 2018-12-28 CN CN201822244665.3U patent/CN209212430U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111749821A (en) * | 2020-06-29 | 2020-10-09 | 奇瑞汽车股份有限公司 | Air intake manifold |
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